StainlessTown 18-8 Stainless Steel Button Socket Head Bolt Assortment Kit with Free Size Gauge 475 Piece Assortment with Nut Bolt Size Gauge Included Includes bolts, hex nuts, lock nuts, flat washers & lock washers Type 304/18-8 Stainless Steel All the popular sizes are included (1/4, 5/16 & 3/8 diameters)